The subterranean Amazon: Mighty river found flowing 13,000ft below ground The Amazon river is known to be the second longest in the world, shorter only than the Nile but, remarkably, scientists have discovered another river flowing thousands of feet beneath it. Researchers from Brazil’s National Observatory believe the subterranean river is 3,700 miles long, about the same length as the Amazon on the surface. Dr Valiya Hamza, from the BNO, […]